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F. W. THOROLD. E. G. R. ARDAGH AND J. TQBURT-GERRANS.

MEANS FOR MAKING AQUEOUS SOLUTIONS or GASES.'

APPLICATION FILED JAN. 22' 1919.

1,319,734. I Patented Oct. 28,1919.

By i AA.

%ATE@ PA l FREDERICK W. THOROLD, EDWARD G. R. ARDAGH, AND JAMES TORONTO, ONTARIO, CANADA.

r. BURT-GERRANS, or

MEANS FOR MAKING AQUEOUS SOLUTIONS OF GASES.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed January 22, 1919. Serial No. 272,560.

To all whom it may concern:

Be it known that we, FREDERICK W.

of Canada, and residents of Toronto, county of .York, and Province of Ontario, Canada,

have jointly invented a new and useful Improvided as an inlet pipe to t 50 provement' in Means for Making Aqueous Solutions of Gases, of which the following is a specification.

Our invention relates to apparatus for making solutions of gases and pertains specifically to automatically controlled means for making aqueous solutions of chlorin gas for use in the sterilization of water and the like.

" The principal object of our invention comprises producing a new and novel system of apparatus by means of which solutions of chlorin may be automatically made from substances that are common and therefore low in cost in order that the present practice of sterilizing water with chlorin may be greatly cheapened.

We accomplish this and other desirable features which will hereinafter be pointed out and fully described by employing auto-- forms a part of this specification we have illustrated a partially sectioned, diagrammaticfj'elevation of our complete device showing theco-functionality of its various parts.

' Referring now' to the drawing, the tank 8 is adapted toreceive brine through the pipe 5 from -any- .convenient source of brine supply. A float valve comprising the valve member 6- and float 7 is connected to the pipe 5 and a short length of ipe 10 is l fe tank 8, the tank and floatvalve constituting a means for supplying brine at a substantially constant head. A gage glass 11 is further provided on the tank 8 that the quantity of brine in the tank may be readily observed. Anoutlet pipe 29 emerges from. the ''lower portion of the tank 8 and connects the tank 8 with an electrolytic cell 23 which is adapted, as is well known in the art, to produce free chlorin gas, and is located at a lower level than the brine tank 8. The electrolytic cell 23 is provided with an outlet pipe 41 by means of which the waste may be carried to a sewer and is further provided with a gas outlet 20 which connects the electrolytic cell 23 with an aspirator or jet pump comprising a nozzle 19 and a casing 18 located in a pipe 12 communicating with the lower portion of a water tank 1. The water tank 1 is provided with a float valve 3 and a float 2, the valve being located in a water inlet pipe 9 which is in communication through pipe 4 with any convenient source of water supply, thus providing a constant head of water in a similar manner that the tank 8 and associated float valve 6 provide a constant head of brine for admission to the electrolytic cell 23. The water tank which is adapted to receive and store the aqueous solution of chlorin. This tank 27 is provided with a float 34 which acting through a bell crank 33 pivoted in a support 35 attached to the tank 27 operates to control the electric switch 32. An electrically operated valve 25 is located in the brine supply pipe 29 and is adapted to be retained in a closed position by means of the spring 26 extending between the fixed support 42 and the lever or operating handle 22 of the valve 25. The ,valve 25 is adapted to be opened electrically by means of the solenoid 28 as shown. A similar electrically operated valve 15 is provided inthe water outlet pipe 12 and is likewise adapted to be maintained closed by means of a spring 14 extending between the fixed support 13 and the operating handle 16 of the valve 15. The valve 15 is adapted to be opened electrically by means of the solenoid 17 as illustrated. The solenoid 17 is connected through one of its terminals by conductor 38 with binding post 37 of the electrolytic cell, the remaining binding post 36 of the electrolytic cell is connected through conductor 40 with one terminal of the solenoid 28, the other terminal of which is connected through conductor 30 with the positive terminal of a source of direct current supply, the negative terminal of this source of direct current supply is connected through conductor 31 with one terminal of the electric switch 32, the other terminal of which is connected through conductor 39 with the free terminal of solenoid 17, thus solenoid 28, electrolytic cell 23, solenoid 17 and electric switch 32 are connected in series and switch 32 controls the electric switch.

The lower portion of the water outlet pipe 12 which enters tank 27 is provided with a perforated cylinder 21 adapted to act as a mixing means for the gas and water. A small tank 44, or as it is commonly called an orifice box, is located at a lower level than tank 27 and is provided with a float valve 42 to control the admission of chlorin solution which enters the box 44 from tank 27 through the pipe 50. Solution is adapted to be drawn from the box 44 through the orifice nozzle 43 and admitted therefrom in required amounts to the water mains as in the present practice of chlorinating water.

The operaton of our device may be completely automatic for, if the electrolytic cell is initially given a charge of brine and the quantity of brine admitted subsequently to the cell is regulated to the requirements of the cell by the maximum extent of opening of the valve 25 and if the amount of water fed to the evolved gas is regulated, by the maximum extent of opening of the valve 15, to an amount that is substantially suflicient to absorb the gas as it is evolved, then should the level of the chlorin solution in the tank 27 fall to a height which allows the switch 32 to be closed, current is immediately supplied to the cell to start the evolution of chlorin and valves 25 and 15 are immediately opened to their respective maximum extent to supply the cell with brine and to admit absorbing water to the gas. The height of solution in the tank 27 will therefore gradually rise to a point sufiicient to cause the switch 32 to be opened, thereby stopping the evolution of gas from the cell and through the closure of valves 25 and 15 shutting off the supply of brine to the cell and the supply of absorbing water to the evolved gas.

The tank 27 is preferably made of such size that a suflicient quantity of chlorin solution may be retained therein to permit of the uninterrupted feeding of the solution from the orifice box 44'to the water mains I during any reasonable interruption of ourrent supply thus achieving without the need of expensive alternative apparatus a 'con- It will be noted from the foregoing that our device is simple and rugged in construction, that its character is such as to be trustworthy and infallible in operation and that as no expensive alternative apparatus is needed to athieve continuous chlorination it is imexpensive in installation. It will be further noted that as our device uses common salt, electricity and water to produce the chlorin solution, the cost of chlorination with our device is considerably less than the cost by present practices.

Having thus described our invention what we claim as new and desire to secure by United States Letters Patent is as follows:

1. In apparatus for making aqueous solutions of chlorin, an electrolytic cell adapted to produce free chlorin gas, means for introducing a solution of sodium chlorid to said cell, means for supplying electric current to said cell, means for bringing water under pressure into intimate contact with the chlorin as evolved from said cell, and means for utilizing the pressure of the water to transport the resultant solution to desired points.

2. In apparatus formaking aqueous solutions of chlorin gas, an electrolytic cell adapted to produce free chlorin gas, means for introducing a solution of sodium chlorid under substantially constant pressure to said cell, means for supplying electric current to. said cell, means for bringing water at substantially constant pressure into intimate contact with the chlorin gas as it is evolved and means for utilizing the pressure of said water to transport the resultant solution to desired points.

3. In apparatus for making aqueous solutions of chlorin, an electrolytic cell adapted to produce free chlorin gas, means for introducing a solution of sodium chlorid to said cell, means for supplying electric current to said cell, means for bringing water under pressure into intimate contact with the chlorin gas evolved from said cell, and means for utilizing the pressure of the water to transport the resultant solution to a storage tank, means operated by the change of level of the solution in the storage tank for controlling the introduction of sodium chlorid solution to said cell, the evolution of chlorin from said cell and the introduction of water to said evolved gas.

Signed by us at Toronto, county of York,-

and Province of Ontario, in the presence of two witnesses. FREDERICK W. THOROLD. EDWARD G. R. ARDAGH. JAMES T. BURT-GERRANS. Witnesses: I H. M. ROWE, L. NEWSOME. 

